1226633661767 has 16 divisors (see below), whose sum is σ = 1259660872800. Its totient is φ = 1194121746048.

The previous prime is 1226633661763. The next prime is 1226633661821. The reversal of 1226633661767 is 7671663366221.

It is a cyclic number.

It is not a de Polignac number, because 1226633661767 - 2² = 1226633661763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226633661763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1654793 + ... + 2278509.

It is an arithmetic number, because the mean of its divisors is an integer number (78728804550).

Almost surely, 2^{1226633661767} is an apocalyptic number.

1226633661767 is a deficient number, since it is larger than the sum of its proper divisors (33027211033).

1226633661767 is a wasteful number, since it uses less digits than its factorization.

1226633661767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624130.

The product of its digits is 13716864, while the sum is 56.

The spelling of 1226633661767 in words is "one trillion, two hundred twenty-six billion, six hundred thirty-three million, six hundred sixty-one thousand, seven hundred sixty-seven".